TUBE AS 3563759 - Caterpillar

C. Guards
1. Some conditions will require external protection for the hose. Full lenght spring guards and armor guards will protect hose from actual mechanical abuse often found on construction and mobile equipment. Short spring guards attached to each fitting are also protective, although their primary function is to ensure that the minimum bend radius is followed right into the fitting to reduce the chance of kinking. Metal or composition shields should be used to protect hoses from high ambient temperatures or radiant heat typical of engine applications.D. Assembly Of Hose To Fittings
1. In all cases, the manufacturer's recommendations regarding fitting attachment must be closely followed to assure satisfactory hose assembly performance. Where lubrication is required, care should be taken to use a lubricant which is compatible with the hose, the fittings, and the fluid system in which the hose assembly is to be used.E. Maintenance
1. Hose assemblies should be inspected before installation for leakage, kinking, abrasion, corrosion or any other signs of wear or damage. Worn or damaged hose assemblies should not be used. F. Clean
1. Clean assembly by blowing out with clean compressed air. Assemblies may be rinsed out with oleum spirits if the tube stock is compatible with oil, otherwise hot water at 180°F max. may be used. G. Inspect
1. Examine hose assembly internally for cut or bulged tube, obstructions, and cleanliness. For segment style fittings, be sure that the hose butts up against the nipple shoulder, band and retaining ring are properly set and tight, and segments are properly spaced. Check for proper gap (1/32" or less) between nut and socket or hex and socket. Nuts should swivel freely. Check the layline of the hose to be sure that the assembly is not twisted. Cap the ends of the hose with plastics covers to keep clean.H. Do's And Don'ts
1. Do check to assure proper mate of sealing angles and nut threads.2. Do replace worn, torn, damaged or leaking hose when first noticed.3. Do inspect I.D. of hose assembly for bulges, cut rubber or other obstructions before installing.4. Do lubricate o-rings when installing hoses or fittings.5. Don't over tighten nut threads.6. Don't route hose around sharp bends hot spots, or where abrasion will harm hose.I. Hose Routing And Installation Examples
1. Under pressure, a hose may change in length. Always provide some slack in the hose to allow for this shrinkage or expansion. (However, excessive slack in hose lines is one of the most common causes of poor appearance.) 2. When hose lines pass near an exhaust manifold, or other heat source, they should be insulated by a heat resistant boot, firesleeve or a metal baffle. In any application, brackets and clamps keep hoses in place and reduce abrasion. 3. If a hose is installed with a twist in it, high operating pressures tend to force it straight. This can loosen the fitting nut or even burst the hose at the point of strain. When installing new assembly with male end and swivel, tighten male end first